(Solved): A 0.62-mm-diameter copper wire carries a tiny current of \( 2.6 \mu \mathrm{A} \). The molar mass o ...

A 0.62-mm-diameter copper wire carries a tiny current of \( 2.6 \mu \mathrm{A} \). The molar mass of copper is \( 63.5 \mathrm{~g} / \) mole and its density is \( 8900 \mathrm{~kg} / \mathrm{m}^{3} \). Estimate the electron drift velocity. Assume one free electron per atom. \( \mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23} \) Express your answer to two significant figures and include the appropriate uni